コード例 #1
0
 /**
  * Sends a request which is not answered by the server. This method can be used for time-critical
  * data
  */
 public void sendRequest(HTTPMessageObject request) {
   if (request == null) {
     logger.error("no message to be sent");
     return;
   }
   try {
     if (socket == null) {
       socket = new DatagramSocket();
     }
     SocketHelper.sendBinaryMessage(request.toBinaryMessage(), socket);
   } catch (Exception e) {
   } finally {
     tryClose();
   }
 }
コード例 #2
0
  /*
   * (non-Javadoc)
   *
   * @see de.fhg.fokus.magic.http.IHTTPClient#sendRequestAndWaitForResponse(de.fhg.fokus.magic.http.HTTPMessageObject)
   */
  public void sendRequestAndWaitForResponse(HTTPMessageObject request) {
    if (request == null) {
      logger.error("no message to be sent");
      return;
    }

    // cancel request if too many active clients
    if (activeClients > HTTPDefaults.MAX_ACTIVE_CLIENTS) {
      return;
    }
    activeClients++;

    int numberOfRetries = 0;
    boolean success = false;

    while (!success && !terminateClient && numberOfRetries < HTTPDefaults.MAX_CLIENT_FAILURES) {
      try {
        if (socket == null) {
          socket = new DatagramSocket();
        }
        SocketHelper.sendBinaryMessage(request.toBinaryMessage(), socket);

        // try to receive response for 2 seconds
        BinaryMessageObject binaryResponse = SocketHelper.readBinaryMessage(null, socket, 2000);

        if (binaryResponse != null) {
          responseMessage = binaryResponse.toHTTPMessageObject();
          responseMessage.setDestinationAddress(binaryResponse.getSourceAddress());
          responseMessage.setSourceAddress(request.getDestinationAddress());
        }
        success = true;
      } catch (Exception e) {
        numberOfRetries++;
      }
    }
    tryClose();
    activeClients--;

    if (debug) {
      System.out.println("HTTPClient response header:" + responseMessage.getHeader());
      System.out.println(
          "HTTPClient response body:"
              + StringHelper.byteArrayToUTF8String(responseMessage.getBody()));
    }
  }